Nice work

Glacier seems to be enjoying your cock rather than just cleaning it, but that's okay.

Yup, totally okay.

"You awake yet?" You ask.
The mare says nothing. Still asleep.

Just how did Flurry (the guard, not the alicorn) manage to stay asleep the whole time?
She must have been really tired...

"How's it smell?" You ask teasingly. "I had it buried in another mare."
"Smells great," Twilight replies, giving your shaft a kiss. "And, it tastes good, too..."

Perfect!

The alicorn gives you a smile and then nods. "Alright..." She then gives you a hug and you feel her sticky, cum-covered tits press to your chest.
"Oh, okay..." you sigh, hugging back. "Now, I'm covered in jizz again..."

Better get used to it; once you face Chrysalis you might expereince that a lot. Especially it already had been hinted she might call backup in form of her drones.

Found an small error:

The unicorn gets to her knees with a smile. "Does that mean I'm next?"

I think you meant to write "alicorn".

When's the next update?

Damn, that is a long time without an update to this... Please, can we have some chapters?

9959541
Good news. I’m writing more of the next chapter. Should be done before Thanksgiving.

9960226
Thank ya kindly :D